On Sun, Sep 29, 2013 at 12:30:38AM +0300, Konstantin Belousov wrote: > On a relatively old test machine, dual-socket X7DWU supermicro, Xeon > X5272, with on-board 82575EB igb controllers, running the stress2 > udp blast test immediately causes the following > > panic: buf=0xfffff8001aa5c800 already enqueue at 1445 prod=1315 cons=1445 > cpuid = 3 > KDB: stack backtrace: > db_trace_self_wrapper() at 0xffffffff802839ab = > db_trace_self_wrapper+0x2b/frame 0xfffffe0123570600 > vpanic() at 0xffffffff8033bd96 = vpanic+0x126/frame 0xfffffe0123570640 > panic() at 0xffffffff8033be23 = panic+0x43/frame 0xfffffe01235706a0 > igb_mq_start() at 0xffffffff80bcb228 = igb_mq_start+0xb8/frame > 0xfffffe0123570710 > ether_output() at 0xffffffff804072a8 = ether_output+0x5c8/frame > 0xfffffe0123570780 > ip_output() at 0xffffffff80430be1 = ip_output+0xe91/frame 0xfffffe0123570860 > udp_send() at 0xffffffff804a5fc4 = udp_send+0x834/frame 0xfffffe0123570910 > sosend_dgram() at 0xffffffff803b517b = sosend_dgram+0x36b/frame > 0xfffffe0123570990 > soo_write() at 0xffffffff8039dbb9 = soo_write+0x49/frame 0xfffffe01235709d0 > dofilewrite() at 0xffffffff803956c5 = dofilewrite+0x85/frame > 0xfffffe0123570a20 > kern_writev() at 0xffffffff803953d5 = kern_writev+0x65/frame > 0xfffffe0123570a70 > sys_write() at 0xffffffff80395363 = sys_write+0x63/frame 0xfffffe0123570ac0 > amd64_syscall() at 0xffffffff8053ae7d = amd64_syscall+0x28d/frame > 0xfffffe0123570bf0 > > Test is available at > svn:base/user/pho/stress2/testcases/udp, invocation line is > BLASTHOST=192.168.5.1 ./udp -t 10m -i 50 -h -v > Substitute the BLASTHOST with the ip address of a scratch box. > > This is on the yesterday HEAD. Could you, please, fix this ?
I also tested on i350 adapters, there the issue is harder to reproduce, but it still panics under the test. Also, I saw the following: Expensive timeout(9) function: 0xffffffff809c7d60(0xfffffe0001864000) 1.9297931s Expensive timeout(9) function: 0xffffffff809c7d60(0xfffffe0001864000) 9.9669852s db> x/i 0xffffffff809c7d60 0xffffffff809c7d60 = igb_local_timer: pushq %rbp
pgpLsCAhCgu8p.pgp
Description: PGP signature
